8566161408 has 360 divisors, whose sum is σ = 29088707648. Its totient is φ = 2378170368.

The previous prime is 8566161403. The next prime is 8566161437. The reversal of 8566161408 is 8041616658.

8566161408 is a `hidden beast` number, since 85 + 6 + 6 + 161 + 408 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8566161403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44384160 + ... + 44384352.

Almost surely, 2^8566161408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8566161408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14544353824).

8566161408 is an abundant number, since it is smaller than the sum of its proper divisors (20522546240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8566161408 is a wasteful number, since it uses less digits than its factorization.

8566161408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 8566161408 is about 92553.5596722244. The cubic root of 8566161408 is about 2046.1089314586.

The spelling of 8566161408 in words is "eight billion, five hundred sixty-six million, one hundred sixty-one thousand, four hundred eight".